Creates a new instance of a projectile of the given TYPE.
This projectile will then automatically call the corresponding draw and update Lua functions.
The turn will not end until it has been deleted with freeprojectile.

It is recommended to use the Lua table "projectiles" as an array to store your projectile data. The array index is the ID of the projectile. Carnage Contest will reset this table for each turn.
Example:
projectiles[id].myvariable